Merge pull request #529 from mnriem/issue-519

Fixes #519 - Unable to run Eclipse Transformer on Java 21 using the Maven plugin

maven-plugins/transformer-maven-plugin/README.md

@@ -8,6 +8,8 @@ This plugin contains the following goals:
 - [`transform`](#transform-goal)
 - [`help`](#help-goal)
 
+__Note__: if you are using Java 21 or later see [Using Java 21 or later](#java-21-or-later).
+
 ## `jar` Goal
 
 The `jar` goal operates at the JAR file level and transforms the specified input artifact into a project artifact.
@@ -250,3 +252,17 @@ It is therefore necessary to configure the `maven-jar-plugin` as follows:
 
 The `help` goal displays help about the goals of the plugin.
 Call `mvn transformer:help -Ddetail=true -Dgoal=<goal-name>` to display configuration details for the specified goal.
+
+## Java 21 or later
+
+If you are using Java 21 or later you will need to configure the Maven plugin to use a specific version of the `biz.aQute.bndlib` dependency.
+
+For example:
+
+```xml
+  <dependency>
+    <groupId>biz.aQute.bnd</groupId>
+    <artifactId>biz.aQute.bndlib</artifactId>
+    <version>7.0.0</version>
+  </dependency>
+```